首页
登录
职称英语
[originaltext] A team of scientists recently began a project to measure the
[originaltext] A team of scientists recently began a project to measure the
游客
2023-08-25
11
管理
问题
A team of scientists recently began a project to measure the effects of loud noises on sea animals. If the sounds don’t harm the animals, then the researchers can go ahead with a plan to transmit sound waves through the Pacific Ocean to take the earth’s temperature. Sound travels faster through warm water than cold water. By analyzing the speed of sound through the ocean over a time, the scientists will be able to determine if our planet is warming up. The experiment was nearly cancelled more than a year ago because environmental groups feared that the sound would confuse or harm the sea animals. So, scientists are conducting tests on the animals first. The researchers lowered a loud speaker that emits low frequency sound about 1000 meters beneath the ocean. Scientists at the site transmit sound waves into the ocean. Radio transmitters attached to some of the sea animals help the researches keep track of the animals movements. If sea animals are distressed by the sounds, they would swim away from the speakers. So far, there aren’t any signs that the animals are being harmed. Researchers at the site noticed that large numbers of sea animals swim near the speaker whether it was turned on or off, but it is still too soon to know for sure, the scientists admit. The test will continue through September. if If all goes well, they say, fwe can begin measuring temperature changes on our planet.
Questions 23 to 25 are based on the passage you have just heard.
23. What is the purpose of analyzing the speed of sound through the Pacific Ocean?
24. What was the reaction of the sea animals to the sound tests?
25. For what purpose were radio transmitters used?
选项
A、They were frightened and distressed.
B、They swam away when the speaker was turned on.
C、They swam closer to "examine" the speaker when it was turned off.
D、They didn’t seem to be frightened and kept swimming near the speaker.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2955951.html
相关试题推荐
[originaltext]TheSaharaDesertisoneofthedriestregionsonearth.Very
[originaltext]TheSaharaDesertisoneofthedriestregionsonearth.Very
[originaltext]TheSaharaDesertisoneofthedriestregionsonearth.Very
[originaltext]Manyinternationalstudentschooselargeschools.Butagrowi
[originaltext]Manyinternationalstudentschooselargeschools.Butagrowi
[originaltext]Manyinternationalstudentschooselargeschools.Butagrowi
[originaltext]W:WithmetodayinthestudioisDr.MiriamRichards,who’sale
[originaltext]W:WithmetodayinthestudioisDr.MiriamRichards,who’sale
[originaltext]M:Solet’smeetourfirstholidaymaker.Hellothere.canyoute
[originaltext]M:Solet’smeetourfirstholidaymaker.Hellothere.canyoute
随机试题
[originaltext]RobertFrostwasborninSanFranciscoin1875andwassenta
【B1】[br]【B3】[audioFiles]audio_eufm_j10_007(20082)[/audioFiles]fit
OnVillageOfficialsWhenthejobmarketworsens,ma
儿童先天脑积水中症状少见的是A.头颅异常增大 B.易激惹 C.视盘水肿 D
商业银行可以通过使用()来综合考虑行业风险。A.行业风险评估工作表 B.贷
根据《商业银行授信工作尽职指引》,表内授信不包括( )。A.票据承兑 B.贸
A.竞争抑制 B.非竞争结合 C.针对多克隆抗体特异性较低 D.针对单克隆
下表列出了M和N两个跨国公司2008年在某国销售额的相关情况,则下述说法正确的是
为了创建一流的品牌精英团队,保证公司的可持续发展力,某公司决定对外招聘具有相关行
某煤矿发生一起突水事故,事故所在地人民政府组织事故调查组对事故进行了调查,下列关
最新回复
(
0
)